2491649698 has 16 divisors (see below), whose sum is σ = 3751932096. Its totient is φ = 1241014320.

The previous prime is 2491649687. The next prime is 2491649701. The reversal of 2491649698 is 8969461942.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 910993 + ... + 913723.

It is an arithmetic number, because the mean of its divisors is an integer number (234495756).

Almost surely, 2^2491649698 is an apocalyptic number.

2491649698 is a deficient number, since it is larger than the sum of its proper divisors (1260282398).

2491649698 is a wasteful number, since it uses less digits than its factorization.

2491649698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4329.

The product of its digits is 6718464, while the sum is 58.

The square root of 2491649698 is about 49916.4271357636. The cubic root of 2491649698 is about 1355.6960423147.

The spelling of 2491649698 in words is "two billion, four hundred ninety-one million, six hundred forty-nine thousand, six hundred ninety-eight".